Suppose x1,x2,x3,x4,x5 are nonzero real numbers such that x1+x2+x3+x4+x5=0. What are the possible value(s) for ∑i=15xi∣xi∣?
−3,−1,1,3
0,1,−1
1,3
−1,−3
0,1,−1,3,−3
